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  <title>is_feed? (FeedFetcher::FeedFetcher)</title>
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  <pre><span class="ruby-comment cmt"># File feed_fetcher.rb, line 27</span>
                <span class="ruby-keyword kw">def</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">is_feed?</span>(<span class="ruby-identifier">page_url</span> , <span class="ruby-identifier">option</span>)
                        <span class="ruby-identifier">page_url</span> = <span class="ruby-identifier">url_with_protocol</span>(<span class="ruby-identifier">page_url</span>)
                        <span class="ruby-identifier">doc</span> = <span class="ruby-identifier">get_doc</span>(<span class="ruby-identifier">page_url</span>)
                   <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">doc</span>.<span class="ruby-identifier">nil?</span>
                                <span class="ruby-keyword kw">false</span>
                <span class="ruby-keyword kw">elsif</span> <span class="ruby-identifier">is_xml_feed?</span> <span class="ruby-identifier">doc</span>
                   <span class="ruby-keyword kw">case</span> <span class="ruby-identifier">option</span>
                    <span class="ruby-keyword kw">when</span> <span class="ruby-identifier">:only_verify</span> <span class="ruby-keyword kw">then</span>      <span class="ruby-keyword kw">return</span> <span class="ruby-keyword kw">true</span>
                    <span class="ruby-keyword kw">when</span> <span class="ruby-identifier">:feed_url</span>       <span class="ruby-keyword kw">then</span>       <span class="ruby-keyword kw">return</span> <span class="ruby-identifier">page_url</span>
                    <span class="ruby-keyword kw">when</span> <span class="ruby-identifier">:xml</span>            <span class="ruby-keyword kw">then</span>                <span class="ruby-keyword kw">return</span> { <span class="ruby-identifier">:file</span> =<span class="ruby-operator">&gt;</span> <span class="ruby-ivar">@xml</span>, <span class="ruby-identifier">:feed_url</span> =<span class="ruby-operator">&gt;</span> <span class="ruby-identifier">page_url</span>}
                        <span class="ruby-keyword kw">end</span>
                <span class="ruby-keyword kw">elsif</span> <span class="ruby-identifier">is_html_page?</span> <span class="ruby-identifier">doc</span>
                                <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">html_has_feed_link?</span> <span class="ruby-identifier">doc</span>
                                 <span class="ruby-keyword kw">case</span> <span class="ruby-identifier">option</span>
                                     <span class="ruby-keyword kw">when</span> <span class="ruby-identifier">:only_verify</span> <span class="ruby-keyword kw">then</span>     <span class="ruby-keyword kw">return</span> <span class="ruby-keyword kw">true</span>
                        <span class="ruby-keyword kw">when</span> <span class="ruby-identifier">:feed_url</span>     <span class="ruby-keyword kw">then</span>       <span class="ruby-keyword kw">return</span> <span class="ruby-identifier">feed_link_from_html</span> <span class="ruby-identifier">doc</span>
                        <span class="ruby-keyword kw">when</span> <span class="ruby-identifier">:xml</span>              <span class="ruby-keyword kw">then</span>      <span class="ruby-keyword kw">return</span> { <span class="ruby-identifier">:file</span> =<span class="ruby-operator">&gt;</span> (<span class="ruby-identifier">fetch_page</span> <span class="ruby-identifier">page_url</span> (<span class="ruby-identifier">feed_link_from_html</span> (<span class="ruby-identifier">doc</span>))), <span class="ruby-identifier">:feed_url</span> =<span class="ruby-operator">&gt;</span> <span class="ruby-identifier">page_url</span>}
                    <span class="ruby-keyword kw">end</span> 
                                <span class="ruby-keyword kw">else</span>
                                  <span class="ruby-keyword kw">false</span>  
                      <span class="ruby-keyword kw">end</span>
                <span class="ruby-keyword kw">else</span>
                                <span class="ruby-keyword kw">false</span>
                <span class="ruby-keyword kw">end</span>
           <span class="ruby-keyword kw">nil</span> 
                <span class="ruby-keyword kw">end</span></pre>
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